Httclient issue

Hi Fritz,
accept my BIG THANKS for create 8 hour tutorial. it helped a lot.
regarding issue, it might not be classed as an issue. i am struggling with HTTP request .
I created project using your your tutorial , kind of stuck withUI
Httclient takes ages to respond and then fails because of timeout. I thought may be i did something wrong, but then i compiled and ran this code form GIT guess what same issue.

var response = await _HttpClient.GetAsync("api/Trips");

could it be my machine related or iis related ? any suggestions please.
I am using .Netcore 2.0
[error.txt](https://github.com/csharpfritz/TripTracker/files/2446990/error.txt)